ramips: add support for Cudy M1800

Specifications

  SoC:       MT7621
  CPU:       880 MHz
  Flash:     32 MiB
  RAM:       256 MiB
  WLAN:      MT7915 WiFi 6 (2.4/5 GHz)
  Ethernet:  2x Gbit ports

                  MAC
LAN        b4:4b:d6:2e:c7:b0 (label)
WAN        b4:4b:d6:2e:c7:b1
WiFi 2.4   00:0c:43:26:46:08
WiFi 5     00:0c:43:26:59:97

Installation

There are two known options:
1) The Luci-based UI.
2) Press and hold the reset button during power up.
   The router will request 'recovery.bin' from a TFTP server at
   192.168.1.88.

Both options require a signed firmware binary.
The openwrt image supplied by cudy is signed and can be used to
install unsigned images.

Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>

target/linux/ramips/dts/mt7621_cudy_m1800.dts

@@ -0,0 +1,177 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "cudy,m1800", "mediatek,mt7621-soc";
+	model = "Cudy M1800";
+
+	aliases {
+		led-boot = &led_internet_white;
+		led-failsafe = &led_internet_white;
+		led-running = &led_internet_white;
+		led-upgrade = &led_internet_white;
+		label-mac-device = &gmac0;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_internet_white: internet-white {
+			label = "white:internet";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+
+		internet-red {
+			label = "red:internet";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&gmac0 {
+	nvmem-cells = <&macaddr_bdinfo_de00>;
+	nvmem-cell-names = "mac-address";
+	mac-address-increment = <1>;
+};
+
+&gmac1 {
+	status = "okay";
+	label = "lan";
+	phy-handle = <&ethphy4>;
+
+	nvmem-cells = <&macaddr_bdinfo_de00>;
+	nvmem-cell-names = "mac-address";
+};
+
+&mdio {
+	ethphy4: ethernet-phy@4 {
+		reg = <4>;
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0000>;
+		mediatek,disable-radar-background;
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		m25p,fast-read;
+		broken-flash-reset;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-boot-env";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0xfb0000>;
+			};
+
+			partition@1000000 {
+				label = "app";
+				reg = <0x1000000 0xfd0000>;
+				read-only;
+			};
+
+			partition@1fd0000 {
+				label = "debug";
+				reg = <0x1fd0000 0x10000>;
+				read-only;
+			};
+
+			partition@1fe0000 {
+				label = "backup";
+				reg = <0x1fe0000 0x10000>;
+				read-only;
+			};
+
+			partition@1ff0000 {
+				label = "bdinfo";
+				reg = <0x1ff0000 0x10000>;
+				read-only;
+
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				macaddr_bdinfo_de00: macaddr@de00 {
+					reg = <0xde00 0x6>;
+				};
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "jtag", "uart3";
+		function = "gpio";
+	};
+};
+
+&switch0 {
+	ports {
+		port@3 {
+			status = "okay";
+			label = "wan";
+		};
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -426,6 +426,16 @@ define Device/bolt_arion
 endef
 TARGET_DEVICES += bolt_arion
 
+define Device/cudy_m1800
+  $(Device/dsa-migration)
+  DEVICE_VENDOR := Cudy
+  DEVICE_MODEL := M1800
+  IMAGE_SIZE := 16064k
+  UIMAGE_NAME := R17
+  DEVICE_PACKAGES := kmod-mt7915e
+endef
+TARGET_DEVICES += cudy_m1800
+
 define Device/cudy_wr1300-v1
   $(Device/dsa-migration)
   IMAGE_SIZE := 15872k

target/linux/ramips/mt7621/base-files/etc/board.d/02_network

@@ -78,6 +78,11 @@ ramips_setup_interfaces()
 		uci add_list firewall.@zone[1].network='eth_data'
 		uci add_list firewall.@zone[1].network='eth_om'
 		;;
+	cudy,m1800|\
+	yuncore,ax820|\
+	zyxel,nt7101)
+		ucidef_set_interfaces_lan_wan "lan" "wan"
+		;;
 	gnubee,gb-pc1)
 		ucidef_set_interface_lan "ethblack ethblue"
 		;;
@@ -117,10 +122,6 @@ ramips_setup_interfaces()
 	ubnt,usw-flex)
 		ucidef_set_interface_lan "lan1 lan2 lan3 lan4 lan5"
 		;;
-	yuncore,ax820|\
-	zyxel,nr7101)
-		ucidef_set_interfaces_lan_wan "lan" "wan"
-		;;
 	zyxel,wap6805)
 		ucidef_set_interface_lan "lan1 lan2 lan3 lan4"
 		ucidef_set_interface "qtn" ifname "eth1" protocol "static" ipaddr "1.1.1.1" netmask "255.255.255.0"